293 lines
9.4 KiB
Java
293 lines
9.4 KiB
Java
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/* ====================================================================
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Copyright 2002-2004 Apache Software Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.contrib.view;
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import java.awt.*;
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import java.awt.event.*;
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import java.io.*;
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import javax.swing.*;
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import javax.swing.table.*;
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import javax.swing.event.*;
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import org.apache.poi.hssf.usermodel.*;
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/**
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* This class presents the sheets to the user.
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*
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*
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* @author Andrew C. Oliver
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* @author Jason Height
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*/
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public class SViewerPanel extends JPanel {
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/** This field is the magic number to convert from a Character width to a
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* java pixel width.
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*
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* When the "normal" font size in a workbook changes, this effects all
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* of the heights and widths. Unfortunately there is no way to retrieve this
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* information, hence the MAGIC number.
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*
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* This number may only work for the normal style font size of Arial size 10.
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*
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*/
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private static final int magicCharFactor = 7;
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/** Reference to the woorkbook that is being displayed*/
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private HSSFWorkbook wb;
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/** Reference to the tabs component*/
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private JTabbedPane sheetPane;
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/** Reference to the cell renderer that is used to render all cells*/
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private SVTableCellRenderer cellRenderer;
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/** Reference to the cell editor that is used to edit all cells.
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* Only constructed if editing is allowed
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*/
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private SVTableCellEditor cellEditor;
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/** Flag indicating if editing is allowed. Otherwise the viewer is in
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* view only mode.
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*/
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private boolean allowEdits;
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/**Construct the representation of the workbook*/
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public SViewerPanel(HSSFWorkbook wb, boolean allowEdits) {
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this.wb = wb;
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this.allowEdits = allowEdits;
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initialiseGui();
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}
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private void initialiseGui() {
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cellRenderer = new SVTableCellRenderer(this.wb);
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if (allowEdits)
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cellEditor = new SVTableCellEditor(this.wb);
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//Initialise the Panel
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sheetPane = new JTabbedPane(JTabbedPane.BOTTOM);
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if (allowEdits)
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sheetPane.addMouseListener(createTabListener());
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int sheetCount = wb.getNumberOfSheets();
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for (int i=0; i<sheetCount;i++) {
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String sheetName = wb.getSheetName(i);
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//Add the new sheet to the tabbed pane
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sheetPane.addTab(sheetName, makeSheetView(wb.getSheetAt(i)));
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}
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setLayout(new BorderLayout());
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add(sheetPane, BorderLayout.CENTER);
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}
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protected JComponent makeSheetView(HSSFSheet sheet) {
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JTable sheetView = new JTable(new SVTableModel(sheet));
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sheetView.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
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sheetView.setDefaultRenderer(HSSFCell.class, cellRenderer);
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if (allowEdits)
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sheetView.setDefaultEditor(HSSFCell.class, cellEditor);
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JTableHeader header = sheetView.getTableHeader();
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//Dont allow column reordering
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header.setReorderingAllowed(false);
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//Only allow column resizing if editing is allowed
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header.setResizingAllowed(allowEdits);
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//Set the columns the correct size
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TableColumnModel columns = sheetView.getColumnModel();
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for (int i=0; i< columns.getColumnCount(); i++) {
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TableColumn column = columns.getColumn(i);
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short width = sheet.getColumnWidth((short)i);
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//256 is because the width is in 256ths of a character
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column.setPreferredWidth(width/256*magicCharFactor);
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}
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//Set the rows to the correct size
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int rows = sheet.getPhysicalNumberOfRows();
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Insets insets = cellRenderer.getInsets();
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//Need to include the insets in the calculation of the row height to use.
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int extraHeight = insets.bottom+insets.top;
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for (int i=0; i< rows; i++) {
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HSSFRow row = sheet.getRow(i);
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if (row == null) {
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sheetView.setRowHeight(i, (int)sheet.getDefaultRowHeightInPoints()+extraHeight);
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} else {
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sheetView.setRowHeight(i, (int)row.getHeightInPoints()+extraHeight);
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}
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}
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//Add the row header to the sheet
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SVRowHeader rowHeader = new SVRowHeader(sheet, sheetView, extraHeight);
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JScrollPane scroll = new JScrollPane( sheetView );
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scroll.setRowHeaderView(rowHeader);
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return scroll;
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}
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public void paint(Graphics g) {
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//JMH I am only overriding this to get a picture of the time taken to paint
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long start = System.currentTimeMillis();
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super.paint(g);
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long elapsed = System.currentTimeMillis()-start;
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System.out.println("Paint time = "+elapsed);
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}
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protected MouseListener createTabListener() {
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return new TabListener();
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}
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/** This class defines the default MouseListener that listens to
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* mouse events in the tabbed pane
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*
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* The default is to popup a menu when the event occurs over a tab
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*/
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private class TabListener implements MouseListener {
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public JPopupMenu popup;
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public TabListener() {
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popup = new JPopupMenu("Sheet");
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popup.add(createInsertSheetAction());
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popup.add(createDeleteSheetAction());
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popup.add(createRenameSheetAction());
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}
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protected Action createInsertSheetAction() {
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return new InsertSheetAction();
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}
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protected Action createDeleteSheetAction() {
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return new DeleteSheetAction();
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}
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protected Action createRenameSheetAction() {
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return new RenameSheetAction();
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}
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/** This method will display the popup if the mouseevent is a popup event
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* and the event occurred over a tab
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*/
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protected void checkPopup(MouseEvent e) {
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if (e.isPopupTrigger()) {
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int tab = sheetPane.getUI().tabForCoordinate(sheetPane, e.getX(), e.getY());
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if (tab != -1) {
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popup.show(sheetPane, e.getX(), e.getY());
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}
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}
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}
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public void mouseClicked(MouseEvent e) {
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checkPopup(e);
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}
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public void mousePressed(MouseEvent e) {
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checkPopup(e);
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}
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public void mouseReleased(MouseEvent e) {
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checkPopup(e);
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}
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public void mouseEntered(MouseEvent e) {}
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public void mouseExited(MouseEvent e) {}
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}
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/** This class defines the action that is performed when the sheet is renamed*/
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private class RenameSheetAction extends AbstractAction {
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public RenameSheetAction() {
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super("Rename");
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}
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public void actionPerformed(ActionEvent e) {
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int tabIndex = sheetPane.getSelectedIndex();
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if (tabIndex != -1) {
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String newSheetName = (String)JOptionPane.showInputDialog(sheetPane, "Enter a new Sheetname", "Rename Sheet", JOptionPane.QUESTION_MESSAGE);
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if (newSheetName != null) {
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wb.setSheetName(tabIndex, newSheetName);
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sheetPane.setTitleAt(tabIndex, newSheetName);
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}
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}
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}
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}
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/** This class defines the action that is performed when a sheet is inserted*/
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private class InsertSheetAction extends AbstractAction {
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public InsertSheetAction() {
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super("Insert");
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}
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public void actionPerformed(ActionEvent e) {
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//Create a new sheet then search for the sheet and make sure that the
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//sheetPane shows it.
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HSSFSheet newSheet = wb.createSheet();
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for (int i=0; i<wb.getNumberOfSheets();i++) {
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HSSFSheet sheet = wb.getSheetAt(i);
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if (newSheet == sheet) {
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sheetPane.insertTab(wb.getSheetName(i), null, makeSheetView(sheet), null, i);
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}
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}
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}
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}
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/** This class defines the action that is performed when the sheet is deleted*/
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private class DeleteSheetAction extends AbstractAction {
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public DeleteSheetAction() {
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super("Delete");
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}
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public void actionPerformed(ActionEvent e) {
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int tabIndex = sheetPane.getSelectedIndex();
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if (tabIndex != -1) {
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if (JOptionPane.showConfirmDialog(sheetPane, "Are you sure that you want to delete the selected sheet", "Delete Sheet?", JOptionPane.OK_CANCEL_OPTION) == JOptionPane.OK_OPTION) {
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wb.removeSheetAt(tabIndex);
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sheetPane.remove(tabIndex);
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}
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}
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}
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}
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public boolean isEditable() {
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return allowEdits;
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}
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/**Main method*/
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public static void main(String[] args) {
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try {
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FileInputStream in = new FileInputStream(args[0]);
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HSSFWorkbook wb = new HSSFWorkbook(in);
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in.close();
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SViewerPanel p = new SViewerPanel(wb, true);
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JFrame frame;
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frame = new JFrame() {
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protected void processWindowEvent(WindowEvent e) {
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super.processWindowEvent(e);
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if (e.getID() == WindowEvent.WINDOW_CLOSING) {
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System.exit(0);
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}
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}
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public synchronized void setTitle(String title) {
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super.setTitle(title);
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enableEvents(AWTEvent.WINDOW_EVENT_MASK);
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}
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};
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frame.setTitle("Viewer Frame");
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frame.getContentPane().add(p, BorderLayout.CENTER);
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frame.setSize(800,640);
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Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
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frame.setLocation((d.width - frame.getSize().width) / 2, (d.height - frame.getSize().height) / 2);
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frame.setVisible(true);
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} catch (IOException ex) {
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ex.printStackTrace();
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System.exit(1);
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}
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}
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}
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